To shift the graph of an equation some number of units to the right you each x in the equation

Adalyn drove 12 miles from her home to her school and then drove back. graph a shows her distance from home during the trip. graph b will show her distance from the school during the trip. complete each statement about graph b.

Teams of 4 are competing in a 1/4 mile relay race. each runner must run the same exact distance. what is the distance each teammate runs?

Find the value of x. also give me an explanation so i can complete it to other questions as well, : )